<template>
	<div>
		<!-- 面包屑导航区域 -->
		<el-breadcrumb separator-class="el-icon-arrow-right">
			<el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
			<el-breadcrumb-item>用户管理</el-breadcrumb-item>
			<el-breadcrumb-item>用户列表</el-breadcrumb-item>
		</el-breadcrumb>
		<!-- 卡片视图区域 -->
		<el-card class="box-card">
			<!-- 搜索添加区域 -->
			<el-row :gutter="20">
				<el-col :span="9">
					<div>
						<el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUsersList">
							<el-button slot="append" icon="el-icon-search" @click="getUsersList"></el-button>
						</el-input>
					</div>
				</el-col>
				<el-col :span="3">
					<el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
				</el-col>
			</el-row>
			<!-- 用户列表区域 -->
			<el-table :data="usersList" style="width: 100%" border stripe>
				<el-table-column type="index" label="#"></el-table-column>
				<el-table-column prop="username" label="姓名"></el-table-column>
				<el-table-column prop="email" label="邮箱"></el-table-column>
				<el-table-column prop="mobile" label="电话"></el-table-column>
				<el-table-column prop="role_name" label="角色"></el-table-column>
				<el-table-column label="状态">
					<template slot-scope="scope">
						<el-switch v-model="scope.row.mg_state" @change="userStateChange(scope.row)"></el-switch>
					</template>
				</el-table-column>
				<el-table-column label="操作" width="180">
					<template slot-scope="scope">
						<!-- 编辑按钮 -->
						<el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
						<!-- 删除按钮 -->
						<el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
						<!-- 分配角色按钮 -->
						<el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
							<el-button type="warning" icon="el-icon-setting" size="mini" @click="showAllotRoleDialog(scope.row)"></el-button>
						</el-tooltip>
					</template>
				</el-table-column>
			</el-table>
			<!-- 分页区域 -->
			<el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="queryInfo.pagenum" :page-sizes="[1, 2, 5, 10]" :page-size="queryInfo.pagesize" layout="total, sizes, prev, pager, next, jumper" :total="total"></el-pagination>
		</el-card>
		<!-- 添加用户对话框区域 -->
		<el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClose">
			<!-- 对话框主体区域 -->
			<el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
				<el-form-item label="用户名" prop="username">
					<el-input v-model="addForm.username"></el-input>
				</el-form-item>
				<el-form-item label="密码" prop="password">
					<el-input v-model="addForm.password"></el-input>
				</el-form-item>
				<el-form-item label="邮箱" prop="email">
					<el-input v-model="addForm.email"></el-input>
				</el-form-item>
				<el-form-item label="手机" prop="mobile">
					<el-input v-model="addForm.mobile"></el-input>
				</el-form-item>
			</el-form>
			<!-- 底部区域 -->
			<span slot="footer" class="dialog-footer">
				<el-button @click="addDialogVisible = false">取 消</el-button>
				<el-button type="primary" @click="addUser">确 定</el-button>
			</span>
		</el-dialog>
		<!-- 修改用户对话框区域 -->
		<el-dialog title="修改用户信息" :visible.sync="editDialogVisible" width="50%" @close="editDialogClose">
			<el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
				<el-form-item label="用户名">
					<el-input v-model="editForm.username" disabled></el-input>
				</el-form-item>
				<el-form-item label="邮箱" prop="email">
					<el-input v-model="editForm.email"></el-input>
				</el-form-item>
				<el-form-item label="手机" prop="mobile">
					<el-input v-model="editForm.mobile"></el-input>
				</el-form-item>
			</el-form>
			<span slot="footer" class="dialog-footer">
				<el-button @click="editDialogVisible = false">取 消</el-button>
				<el-button type="primary" @click="editUser">确 定</el-button>
			</span>
		</el-dialog>
		<!-- 分配角色对话框区域 -->
		<el-dialog title="分配角色" :visible.sync="allotRoleDialogVisible" width="50%">
			<div>
				<p>当前的用户：{{userInfo.username}}</p>
				<p>当前的角色：{{userInfo.role_name}}</p>
				<p>分配的新角色：
					<el-select v-model="selectedRoleId" placeholder="请选择">
            <!-- :label 看到的角色文本 -->
            <!-- :value 真正选中的值 -->
						<el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id">
						</el-option>
					</el-select>
				</p>
			</div>
			<span slot="footer" class="dialog-footer">
				<el-button @click="allotRoleDialogVisible = false">取 消</el-button>
				<el-button type="primary" @click="allotRole">确 定</el-button>
			</span>
		</el-dialog>
	</div>
</template>

<script>
export default {
  data() {
    // 验证手机号的规则
    const checkMobile = (rule, value, cb) => {
      // 验证手机号的正则表达式
      const regMobile = /^(13[0-9]|14[579]|15[0-3,5-9]|16[6]|17[0135678]|18[0-9]|19[89])\d{8}$/
      if (regMobile.test(value)) return cb()
      cb(new Error('请输入正确的手机号'))
    }

    return {
      // 请求用户数据列表的参数对象
      queryInfo: {
        query: '',
        // 当前页
        pagenum: 1,
        // 当前页的信息条数
        pagesize: 2
      },
      // 用户数据列表
      usersList: [],
      // 用户数量
      total: 0,
      // 控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加用户表单的校验规则
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '用户名的长度在3~10个字符之间', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '密码的长度在6~15个字符之间', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { type: 'email', message: '请输入正确的邮箱地址', trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: ['blur', 'change'] }
        ]
      },
      // 控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      // 查询到的用户数据对象
      editForm: {},
      // 修改用户表单的验证规则
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { type: 'email', message: '请输入正确的邮箱地址', trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: ['blur', 'change'] }
        ]
      },
      // 控制分配角色对话框的展示与隐藏
      allotRoleDialogVisible: false,
      // 即将被分配角色的用户信息对象
      userInfo: {},
      // 获取到的所有角色数据
      rolesList: [],
      // 已选中的角色 id 值
      selectedRoleId: ''
    }
  },
  created() {
    this.getUsersList()
  },
  methods: {
    // 获取用户数据列表
    async getUsersList() {
      const { data: res } = await this.$http.get('users', { params: this.queryInfo })
      if (res.meta.status !== 200) return this.$message.error('获取用户数据列表失败！')
      this.usersList = res.data.users
      this.total = res.data.total
      // console.log(res)
    },
    // 监听 pagesize 的事件处理函数
    handleSizeChange(newSize) {
      // console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getUsersList()
    },
    // 监听 pagenum 的事件处理函数
    handleCurrentChange(newPage) {
      // console.log(newPage)
      this.queryInfo.pagenum = newPage
      this.getUsersList()
    },
    // 监听 switch 开关状态的改变
    async userStateChange(userinfo) {
      const { data: res } = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('更新用户状态失败！')
      }
      this.$message.success('更新用户状态成功！')
    },
    // 监听添加用户对话框关闭的事件
    addDialogClose() {
      this.$refs.addFormRef.resetFields()
    },
    // 添加用户
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) return this.$message.error('添加用户失败！')
        // 关闭对话框
        this.addDialogVisible = false
        // 刷新数据列表
        this.getUsersList()
        // 提示添加成功
        this.$message.success('添加用户成功')
      })
    },
    // 点击修改按钮：展示编辑用户的对话框
    async showEditDialog(id) {
      const { data: res } = await this.$http.get('users/' + id)
      // console.log(res)
      if (res.meta.status !== 200) return this.$message.error('查询用户信息失败！')
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 监听修改用户对话框关闭的事件
    editDialogClose() {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并提交
    editUser() {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.put('users/' + this.editForm.id, {
          email: this.editForm.email,
          mobile: this.editForm.mobile
        })
        if (res.meta.status !== 200) return this.$message.error('更新用户信息失败！')
        // 关闭对话框
        this.editDialogVisible = false
        // 刷新用户列表
        this.getUsersList()
        // 更新成功提示
        this.$message.success('更新用户信息成功！')
      })
    },
    // 根据 id 删除对应的用户信息
    async removeUserById(id) {
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // 点击确定按钮，返回值为字符串 confirm
      // 点击取消按钮，返回值为字符串 cancel
      if (confirmResult === 'cancel') return this.$message.info('已取消删除！')
      const { data: res } = await this.$http.delete('users/' + id)
      if (res.meta.status !== 200) return this.$message.error('删除失败！')
      // 刷新用户列表
      this.getUsersList()
      // 弹出删除成功的提示消息
      this.$message.success('删除成功！')
    },
    // 点击分配角色按钮，展示对话框
    async showAllotRoleDialog(userInfo) {
      this.selectedRoleId = ''
      this.userInfo = userInfo
      // 获取所有的角色数据
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) return this.$message.error('获取角色数据列表失败！')
      this.rolesList = res.data
      this.allotRoleDialogVisible = true
    },
    // 分配角色
    async allotRole() {
      // 如果用户没有选择新的角色
      if (!this.selectedRoleId) return this.$message.error('请选择要分配的角色！')
      // console.log(this.userInfo, this.selectedRoleId)
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, {
        rid:
       this.selectedRoleId
      })
      if (res.meta.status !== 200) {
        this.allotRoleDialogVisible = false
        return this.$message.error('更新角色失败！')
      }
      this.allotRoleDialogVisible = false
      this.getUsersList()
      this.$message.success('更新角色成功！')
    }
  }
}
</script>

<style lang="less" scoped>
</style>
